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y in (-oo:+oo)
(4/5)*y = 28 // - 28
(4/5)*y-28 = 0
4/5*y-28 = 0 // + 28
4/5*y = 28 // : 4/5
y = 28/4/5
y = 35
y = 35
| 3x-6=4(6-3x) | | 4x=3/4 | | 3x-10=2x-8x+4 | | (2xy-3x)(6xy+9x)= | | 9x=6(3+x) | | 2+3(4+x)=1-5(6-x) | | 20/12 | | 4-8x=7x-12 | | (2xy-3x)(6xy+9)= | | 16/40 | | 24/32 | | 7(x+3)=7 | | 45/25 | | 40/35 | | 4p-12= | | 4(2x+1)=12 | | x=2.6x-0.45 | | 16/12 | | -13x=7x+6*5 | | 4(2x+5)=3x-15 | | 5(2x-2)-3(x-4)=9(x+2) | | 14x-3x=26+4 | | 2b^2-1b-6=0 | | r^4+r^3=12r^2 | | 5-2/3=x | | 5-2/3 | | 7x-(3x+1)=2 | | 4x+1=54 | | 2x+1=153 | | x+x+1=151 | | 8/2434 | | 2434/8 |